Welcome to HCM .
Your present hb levels are not very low and definitely not high enough to cause liver damage
.so you can continue your present medications.Your low energy levels may also be due to overweight
It's good to walk daily , try to increase the duration gradually to 30 -40 min.
A balanced diet and plenty of water are very imp too.
Try to avoid excessive worrying and you may try yoga
or other relaxing activities.
Wishing you good health